A class that can be used by the creator of the
AbstractLookup to
control its content (a kind of
Privileged API
giving creator of the lookup more rights than subsequent users of the lookup).
Typical usage:

Method Detail

addPair

The method to add a pair to the associated AbstractLookup.
Preferably call this method when lookup is already associated with
this content (association is done by passing this object to some
AbstractLookup's constructor
once).